Photo-u tho



(No Model.) 7

W. H. HILL. GAS ATTAGHMENT FOR LAMPS.

vN0. 538,415. Patented Apr. 30, 1895.

UNITE STATES ATENT OFFICE,

WILLIAM H. HILL, OF PHILADELPHIA, PENNSYLVANIA.

GAS ATTACHMENT FOR LAMPS.

SPECIFICATION forming part of Letters Patent No. 538,415, dated April 30, 1895.

Application filed June 20, 1894- Serial Ne. 515,131- (No model.)

To all whom it may concern.-

Be it known that I, WILLIAM H. HILL, a citizen of the United States, residing at Philadelphia, in the county of Philadelphia and State of Pennsylvania, have invented a new Improvement in Gas Attachments for Lamps, of which the following is a specifica-,

tion.

My invention relates to the new improvement in gas burners and application of the same to the ordinary lamps now in use, and which are constructed to burn oil of any description, and the objects of my invention are, first, to provide a gas burner which can be readily applied to the body part of a lamp in which oil is used as an illuminant, that will be exceedingly simple and inexpensive in construction, operation and method of application, and which will be free from all undesirable odors and danger, which generally attend the use of oil; second, to supply a desirable means of illuminating lamps which are often used more for decorative purposes and ornamental effect than for utility of illumination, as in lamps supplied with exquisitely trimmed silk and fancy shades, and where the consumption of' oil is objectionable; third, to provide a device that will enable any one to display the efiect of'colors and various decorative combinations, as adapted in the use of artistic shades, as manufactured for use with oil burning lamps, without having to use oil, and thereby securing a convenient means of illuminating oil lamps, without soiling them by filling with oil, and thereby removing all risk of accidentally soiling or greasing the shade; fourth, to make a device for burning gas and utilizing ordinary oil lamps of any description as the fixture or support for gas burner, and to provide an efficient and desirable means of using oil lamps or oil fixtures with gas, without in any way destroying the usefulness of the lamp for oil purposes, or altering it mechanically in any part of its construction, and thereby leaving thelamp free to be used with oil when required.

Having thus stated a few of the several objects of my invention, I accomplish the purposes and objects intended by'the special construction and arrangement of a burnerv for gas that can be attached to the lamp in the same manner as the oil burner would be, and retaining the same general appearance as the burner for use with oil. The combustion of the gas will be on similar principles as those involved in the Argand gas burner, or others of a like construction, as nowgenerally in use, and having an internal, central draft, within the circle of the flame, and an external draft surrounding the outside of the flame.

In lamps constructed with a central draft tube passing up through thewell of thelamp and receiving or taking their inner current of airat their base, my newly invented burner enables the use of this central draft tube being retained without any alteration, and thereby serving as the conductor of the central draft of the gas burner.

The gas burner tube is so constructed as to fit over the central drafttube of the lamp exactly in the same manner as an oil burner,

and the outside chamber at its base is perfo rated the same as the chamber of the oil burner, except that the size and number of such openings or perforations are regulated in manufacture, so as to only allow the entrance of the required volume of air necessary to secure perfect combustion of the gas. This perforated air chamber has its sides shaped, and the chamber collar with its perforations, and gallery carriage for chimney, all formed to give. the gas burner the same general appearance as the oil burner, and at the same time tosecure perfect combustion, as well as adapting the gas burner to be used with the central draft tube, and its air current diaphragms or deflector.

In lamps where a central draft is not employed, my invention has an auxiliary perforated collar, which conforms to the base of the gas burner and is constructed with a threaded flange which adapts it to be screwed into the well, or oil chamber of the lamp, the perforated openings allowing the free admission of air to the interior or central draft of the gas burner, as with a lamp having a central draft tube.

I attain the objects of my invention as described by the construction or attachments shown in the accompanying drawings, where for a better understanding, and for illustration, and to more clearly describe the practical operation and application of my invention, I have confined my drawings and description as would be adaptable and applied to the commonly constructed lamp having a central draft tube, and to a partial view of one having no central draft tube, both of which are in common every-day use; but I wish it understood that my invention is applicable to any and every description of oil burning lamps.

Referring to the accompanying drawings, Figure 1 shows a vertical section of a lamp- Well or oil-receptacle constructed on the principle involving the use of a central draft-tube, and illustrates my newly-invented gas-burner as adapted and applied to a lamp of this description. Fig. 2 is a partial, vertical section of a lamp oil-well not having a central drafttube, and in which I illustrate my perforated flanged collar between my lamp gas-burner and the lamp-body, which takes the place of the central draft-tnbe. Fig. 3 shows a top or plan view of burner with the chimney gallery or collar removed.

Similar letters refer to the same parts throughout the various figures.

A is a section of the oil well of a lamp.

B B is a section of the central draft tube, extending from the base I) to b.

0 is the central current deflecting tube, with the perforated diaphragms c and c and flame deflector D.

K is the chimney.

A A is the flange of the lamp oil well A, in which the oil burner tits and is secured by the groove d.

e e are the inner and outer tubes of my improved gas burner, with its gas chamberff and gas inlet pipe f. The bases of the gas burner tubes eand e are secured together, and gas tight at E. The gas, entering at f, passes up and round and is somewhat confined at the top of the chamber ff, formed by the inner tube e and outer tube e, by means of the domed or curved shape being given to the outer tube e, and forming a fine hair line opening F F and forming the burner, or combustion outlet for the gas, as shown at G. The action of the air currents passing up the tube 13, and partially divided by the diaphragms c and c as indicated by the arrow marks 1 and 2, and the deflecting currents passingthrough the openings in the deflector D are all so controlled that a steady semi-spherical flame is produced, and with the outer currents entering the air chamber H, as shown by the arrow marks 3, and passing through the crown collar or gallery I as shown by arrow marks 4, all

combining to secure the most desirable and perfect combustion of gas.

In Fig. 2 where thelamp reservoir is shown as not having any central tube draft, the collar J is perforated at 'L'. This collar is socured in the same manner as the bu rner which has been removed, having the threaded flange j, the collar being a little enlarged so that the gas burner E fits securely by the groove d. The air entering this collar, as shown by the arrow mark, insures the same efficientresults as attained when applied to lamps having a central draft tube, as the diaphragms and deflector, and their results are the same as when applied with the lamp having a central draft.

It will be apparent that a gas burner, constructed as shown and described, simple in its construction, eificient in its operation, and so readily attached or detached to lamps of all descriptions, no change being needed, except the removal of the oil burner and oil, and simply placing in its position, the gas burner, will afford a convenient means of illuminating lamps where a lamp effect is required, but where the use of oil is not desirable.

Changes in the form, proportion and several minor details of construction may be resorted to without departing from the principles or sacrificing any of the advantages of my in- Vention.

Having fully described the invention, what I claim as new, and desire to secure by Letters Patent, is

The combination with alamp having acoutral draft-tube; of a gas burner adapted to be used iuterchangeablywith an oil burner, said gas burner comprising an inner casing surrounding said draft-tube; a casing surrounding said inner casing, said inner and outer casings forming a gas chamber, the top of said outer casing being flared inwardly to partially close said chamber; a gas inlet for said gas chamber; an innertube supported in said inner draft tube, at its top, by means of a plurality of perforated cone-shaped diaphragms, said inner tube having at its top a perforated convex flame deflector; a perforated casing formed outside of said outer casing; and annular perforated flanges, formed above said perforated casing, whereby a perfect gas combustion is formed, as specified.

In testimony whereof I have hereunto affixed my signature in the presence of two witnesses.

WILLIAM H. HILL.

Witnesses:

H. G. LUKENs, WILLIAM J. SMILEY. 

